17.2 Aromatic vs Antiaromatic vs Nonaromatic | Organic Chemistry
Chad provides a lesson on Aromaticity and covers how to identify Aromatic, Antiaromatic, and Nonaromatic compounds in this lesson. Chad begins by identifying the four criteria of aromatic compounds, how benzene satisfies these four criteria, and then how to identify antiaromatic and nonaromatic compounds as well. He then provides 13 different examples and identifies them all as aromatic, antiaromatic, and nonaromatic. He also clearly spells out how to tell when a lone pair of nonbonding electrons is part of the aromatic pi system and when it is not. Finally, he also provides two examples of larger rings, one that should be identified as not being planar and therefore nonaromatic (cyclooctatetraene) and one that can adopt a planar conformation and turns out to be aromatic ([14]annulene).
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00:00 Lesson Introduction
00:50 Aromaticity Criteria (4 Rules)
09:11 How to Identify Antiaromatic and Nonaromatic Compounds
11:22 Aromatic vs Antiaromatic vs Nonaromatic -- Examples 1-4
14:10 Aromatic vs Antiaromatic vs Nonaromatic -- Examples 5-7 with Lone Pairs
26:53 Aromatic vs Antiaromatic vs Nonaromatic -- Examples 8-10
31:23 Aromatic vs Antiaromatic vs Nonaromatic -- Examples 11-13
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I owe my life to you, sir. Great job explaining everything. Thank you so very much
@ChadsPrep
7 ай бұрын
You are most welcome.
Chad your videos are the best out there on OChem, seriously! This is the last unit for my OChem #1 course and I have been watching your Ochem playlist this whole summer semester. To say your videos are great is an understatement.
@ChadsPrep
17 күн бұрын
Glad you like them and Happy Studying!
best video to exist for pre-meds. currently studying for my OAT and this is a lifesaver, thank you!
@ChadsPrep
16 күн бұрын
Glad it was helpful!
These videos are so useful. My ritual is to take notes following all your videos before starting any homework problems. My final is tomorrow! Thanks for everything Chad, I'll be here when I start Orgo 2.
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2 жыл бұрын
Glad the channel is helping you - hope you do well on your final!
Sir you have no idea how much you’ve helped me this semester so far 🙌🏻
@ChadsPrep
2 жыл бұрын
Glad to hear it, Denisse M. - Happy Studying!
Really great video. Explained this concept better than any other video or explanation I have gotten from my professors.
@ChadsPrep
Жыл бұрын
Glad to hear it, Emmie S!
Thank you! That was explained really well.
@ChadsPrep
2 жыл бұрын
You're welcome, Mohd Raheem!
Just wanted to let you know that your videos are vital for my ochem studying.
@ChadsPrep
Жыл бұрын
Glad you found us, lz - Happy Studying!
Thank you so much! Keep up the great content.
@ChadsPrep
Жыл бұрын
Glad you are finding it helpful, Rynn!
this was amazing as are all of your videos. thank you so much
@ChadsPrep
2 жыл бұрын
You're welcome, patrica - thank you!
Wow! Best lecture in my life. Thank you very much. I was suffering from reading organic chem book 5days before quiz. I can solve almost most of the problems in the book!
@ChadsPrep
10 ай бұрын
Great to hear - hope you do well on your studies!
Another Great Video!
@ChadsPrep
Жыл бұрын
Thank you!
Hi Chad! If there is a carbonyl group present in the ring, how would that affect aromaticity?
Wow this video is amazing thank you so much! My prof completely skipped over the cation and how the lone pairs work so I was so confused when doing homework. Your video helped a lot.
@ChadsPrep
Жыл бұрын
Glad it helped you - Happy Studying!
So how do you know if an annulene structure is planar? And how can you automatically tell that it's conjugated? Thanks so much for the video!
You are awesome! please make more videos. Thank you for useful videos.
@ChadsPrep
Жыл бұрын
You're welcome and Thank you
So good, thank you!
@ChadsPrep
5 ай бұрын
Glad you liked it!
Chad, a while back, I made a comment on one of your videos (maybe resonance) about Nitrogen being tricky in a ring. This is what I was getting at, haha. Thanks for the video.
@ChadsPrep
3 жыл бұрын
Glad it helped!
Thanks man appretiated, a true Chad.
@ChadsPrep
Ай бұрын
You're welcome!
i want to know how you are able to tell so quickly if the structure will be conjugated?
Amazing video
@ChadsPrep
Жыл бұрын
Glad you found it helpful :)
Ha! The stop sign one boat confirmation looks like an alien!😂
@ChadsPrep
3 ай бұрын
I'm hearing the X-Files theme as I read your comment!
Good job sir g
@ChadsPrep
3 ай бұрын
Thank you
Professor, thank you very much for making the playlist, it is really easy to watch the lectures in the series
@princeysuryan2561
2 ай бұрын
Prof. I asked you a question , but you did not answer, I think you are a little busy.
@ChadsPrep
2 ай бұрын
Glad you like the playlist - yes, always busy.
thank u
@ChadsPrep
2 жыл бұрын
You're welcome!
You are so amazing for these insanely helpful videos. However, I am confused as, per my course, the 1H azirine is antiaromatic and not non-aromatic. I am unsure why given it should have the option to stay sp3 and not become antiaromatic? Everywhere I look online states that is is in fact antiaromatic?
@ChadsPrep
5 ай бұрын
I would have thought nonaromatic also. Check out *Note 4* at the bottom of the following page. www.masterorganicchemistry.com/2017/03/27/antiaromaticity/ A very informative and comprehensive article. It appears that [1H]-azirene is so unstable that it is never observed. The author's claim here is that the easiest way to explain this instability is that it is antiaromatic. I don't know if it is conclusive, but the author, James Ashenhurst, is brilliant so I'm not going to be quick to doubt him!
@keatonbrunner3562
5 ай бұрын
@@ChadsPrep Thank you very much for the reference! So in respect to your thoughts, does this mean that every lone pair on nitrogen then will be a part of the p orbital, ultimately playing into the overall bonding molecular orbitals? Be it for any cyclical, conjugated, planar structure?
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@ChadsPrep
Жыл бұрын
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Thank you :)
@ChadsPrep
3 жыл бұрын
You're welcome, Erik!
got a good kick out of 10:20
@ChadsPrep
Жыл бұрын
Glad to hear it!
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@ChadsPrep
Жыл бұрын
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@ChadsPrep
Жыл бұрын
Thanks!
119 saved my life
@ChadsPrep
3 ай бұрын
ti devo la mia vita
@ChadsPrep
8 ай бұрын
Glad the channel is helping you!